David Handelsman is Professor of Reproductive Endocrinology and Andrology, founding Professor/Director of the ANZAC Research Institute, inaugural Head, Andrology Department, Concord Hospital and Associate Dean (Research Centres) at University of Sydney Medical School. After Endocrinology training and NHMRC & Wellcome Trust postdoctoral fellowships, he become Australia’s first Professor of Andrology (1996), created the first hospital Andrology Department (1999) and established the ANZAC Research Institute (2000). The most widely cited author world-wide on “androgens” or “testosterone”, he has over 500 peer-reviewed papers which are cited >12,000 times (h index 58; Web of Science). He wrote an editorial for the New England Journal of Medicine (2013) and had work cited in a Time magazine cover story on testosterone use (2014). His research focuses on androgen physiology, pharmacology and toxicology most recently in genetic models of androgen action, steroid mass spectrometry, anti-doping science, and clinical and epidemiological androgen pharmacology.